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Formal charge

  1. Feb 8, 2009 #1
    with lewis structures, if i come to 2 seperate structures that both seem right, and i want to know which is right, and i check the formal charge, and get:
    for one diagram

    0:1:-1:1:1

    and for the other
    0:0:0:0:2

    which is better, i guess what im trying to ask is, is it preferable to have a minimal FC overall, but spread over all the atoms, or as many atoms as close to zero as i can??
     
  2. jcsd
  3. Feb 8, 2009 #2

    chemisttree

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    It is preferable to have a complete octet around everything and let the FC chips fall where they may...
     
  4. Feb 8, 2009 #3
    that i know, but if i have a complete octet for all the atoms but can either spread the FC between them or have all the FC on one, what is better
     
  5. Feb 10, 2009 #4

    chemisttree

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    Give us your example. I can't think of an example where that would be the case off the top of my head...
     
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